Coupling.



\ Patented mayzl, 190|. H. s. voLKMAn.

-0 0 U P LIN G (Application med Aug. 9, 1900.)

(No Model.)

YH: mums warms co. Puomuwo.. wAsnlNsTuN. n. c.

YUNITED STATES PATENT OFFICE.

HENRY G. VOLKMAR, OF NEW YORK, N. Y.,.ASSIGNOR TO HIMSELF AND JAMES P. PAYNE, OF SAME PLACE.

CouPLlNe.

SPECIFICATION forming part of Letters Patent No. 674,389, dated May 21, 1901.

Application filed August 9, 1900. Serial No. 26,345. (No model.)

To a/ZZ whom t may concern.'

Be it known that I, HENRY G. VOLKMAR, a citizen of the United States, residing in the city of New York, borough of Manhattan, in the county and State of New York, have invented a certain new and useful Improvement in Couplings, of which the following is a specification.

The invention relates to means for joining metal pipes to earthenware or other fragile receptacles, and is designed more particularly for plumbers use in joining discharge-pipes to crockery hand-basins. A

The invention consists in certain details of construction to be hereinafter described.

The accompanying drawings form a part of this specification and show what l consider the best means of carrying out the invention.

Figure l is a vertical section through a hand-basin equipped with my improved coupling, the latter being shownin elevation. The remaining figures are on a larger scale. Fig. 2 is a central vertical section through the coupling alone. Fig. 3 is a transverse section taken on the line 3 3 in Fig. 2, showing the corrugations on the under side of the flange. Fig. 4 is a plan View of a portion of the basin similarly corrugated. Fig. 5 is an elevation of the helical spring.

Similar letters of reference `indicate the same parts in all the figures.

A is the ordinary slab of a basin, supported on brackets or standards, (not shown,) and B is the basin, joined thereto by any ordinary or approved fastenings. The basin shown is'of the type most difficult to connect without breaking, in which the overflow-orifices b lead to a passage B, formed in the material of the basin and communicating with the dischargepassage through the recess B3 between the horizontal partitions B4 B5, surrounding the discharge-oriice B6. The upper face of the partition B1 is corrugated radially, as shown at B7 in Fig. 4, while the under face of the lower partition B5 is plane.

O is a metallic tube having a slightly-tapered seat C at the upper end adapted to receive the ordinary plug (not shown) and surrounded by an annular flange C2, having theradial corrugations C3 on its under face to match the corrugations on the basin. Be-

low the plug-seat C the metal of the tube is cut away on opposite sides, as indicated at C4 and O4, to provide inlet-orifices for the waste from the overflow, as usual.

'C5 represents the ordinary cross-bar, serving to arrest solid matter.

The main portion C of the tube is shown as screw-threaded, as usual, but may be smooth throughout the upper portion of its length and have only sufficient threads at the lower end to receive the nut D of the union D, connecting to the main discharge pipe (not shown) in any suitable manner.

M is a stili helical spring inclosing the tube O and exerting its force expansively between the under face of the basin and the nut D'. The spring should have suicient length to allow considerable shortening by compression before its coils contact with each other, thus allowing the nut to be traversed some distance upon the tube and correspondingly increasing the thrust of the spring, while still maintaining sufficient resiliency to avoid danger of fracturing the basin at the point of contact.

In applying the coupling a soft washer E, of rubber or other suitable material, is laid upon the corrugations of the upper partition B4, and the tube C is then passed downward through the washer and discharge-orifice until the flange C2 restsupon the washer and is then turned until its corrugations match those in the basin. The washer F, having a soft facing F', of rubber, is next applied from below, encircling-the tube C and having its soft face next to the plane under face of the partition B5. The spring M is' next passed over the end of the tube and the nut D of the union D is engaged with the threads thereon. Screwing the nut upward compresses the spring M and draws the llange C2 into its IOO sets li M2, introduced to allow the upper and lower turns to lie in a plane With their respective bearingsurfaces.

I can omit the corrugations on the flange or on the basin, or on both, if preferred, depending on the friction of the Washer E to prevent turning, or the Washer may be dispensed With and its place taken by any suitable ceinent.

A separate nut may be applied to the tube above the union and serve to compress the spring independently of the nut D', as Will be understood.

Modifications may also be made in the forms and proportions of the several parts and in the materials employed.

Although l have described the invention as applied to a basin in which the )Verflow-passage is formed in one therewith, it is adapted to serve with basins or similar receptacles having independent overoW-passages.

In a coupling of the character described, a metallic tube threaded at its lower end and having tapered seat and annular fiange at its upper end, said flange being corrugated upon its under face, and the tube below the seat formed with openings, and grate below the openings, a nut secured to the threaded end of the tube, a union held by said nut, a soft Washer beneath the corrugations ofthe iiange, a washer with a soft facing surrounding the tube below the openings, and a helical spring around the tube with one end bearing against the upper face of said nut and the other end against the under face of the soft faced Washer to force the corrugations of the iiange in to the soft Washer and the soft-faced washer against the under face of a basin, all substantially as and for the purpose specified.

In testimony that l claim the invention above set forth I affix my signature in presence of two Witnesses.

HENRY G. VOLKMAR. Witnesses:

ROBT. CONNOR, W. A. GRACEY. 

